The invention provides an attack angle control system and an attack angle control method, and belongs to the field of aircrafts. The attack angle control system is used for controlling the attack angle of a fixed wing; the fixed wing is connected with a machine frame, and comprises a hinge and an attack angle control mechanism, wherein a cross rod of the machine frame is connected with a vertical rod of the machine frame; the vertical rod is connected with the fixed wing through the hinge; the attack angle control mechanism is used for adjusting an inclined angle between the fixed wing and the machine frame. According to the attack angle control method, the attack angle control system is adopted. According to the attack angle control system and the attack angle control method disclosed by the invention, the attack angle of the fixed wing can be controlled through the attack angle control mechanism and the hinge, so that the attack angle of an aircraft during ascending, descending and flying can be real-time controlled, normal operation of the aircraft during ascending and descending is guaranteed, and smooth flight is guaranteed.